Need to find web page or layout of exhaust from tube headers to the system exit point, for the 1994 lightning, and if it was TRUE DUALS or H-Pipe going into a, one in two out muffler.
Read that there where four (4) cats on this setup.

 

i have a 94 and recenly installed a bassani exhaust. it had a true dual 2 1/4 system with 2 seperate mufflers. it did have 4 cats which i did away with. it exits behind the passenger tire.